webster
n. countablen. a person who is very good at using words or writing dictionaries. You might call a friend this if they always know the exact right word to use.
n. a person skilled in lexicography or possessing an exceptionally large vocabulary. Often used as a humorous or lighthearted nickname for someone who corrects others' grammar or word choices.
Ask Sarah for the definition; she is a real Webster.
Since he started reading the dictionary for fun, his friends have started calling him Webster.
While he lacked a formal degree in linguistics, his meticulous attention to etymology earned him the playful title of Webster among his editorial colleagues.
Often used as a proper noun or a common noun to personify the dictionary; frequently used with the indefinite article 'a'.